(9x) 1/4" 4x8 plywood
Not trying to be rude or anything here, just trying to give advice:
1/4" is pretty flimsy stuff (and don't expect it to hold up to weather...it won't - especially if you get allot of wet weather)
Personally I'd go with 1/2" OSB or plywood on the roof (and yes the tar/felt paper too)
On the walls/doors I'd go with 3/8" or 1/2" siding board (don't know if that's actually what they call it), comes in 4x8 sheets and is usually made of the same 'stuff' as OSB (or some similar pressed board), but its got a hard coating on one side, and is designed for exposure to weather.
Your best choice in my opinion would be to match whatever siding type is on your house though (simply for looks)
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Now back to lights
In some cases I'm fine with a 'dim' lamp like 5000k. There have been even been times cases when I've specifically picked a 5000k for its dimmness - like when I had a couple 1x 4-foot lights setup as security lights...I even ran T12 on a T8 ballast so it'd be dimmer (I wanted light, but not not something bright .lol. )
In many cases (like plants or fish) I want something as bright/efficient as possible.
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Cities/ReStores
I'm not sure if Fairbanks, AK has one but in a city of 32,000 and
I'd basically consider that a small-ish town .lol.
There's 6 ReStores that I know of here, one that's fairly convenient, it being one of what I consider the "3 main ones".
I went to one that I'd never been too last weekend (and won't be going back since it had almost no lighting and is quite out of the way)
But now I've been to 5 of the 6
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Schools/lights
My highschool was all 4xF40 troffers in the main part, all cool-white (and likely 34w)
The 'shop' rooms had either 2xF40 or 2xF96 (I don't remember) shoplight type.
The gym was MV
In back of the school was some of those temporary classroom buildings, which louvered F40 fixtures (I really liked those, and always tried to discreetly look up & see what type of lamps were in them - The only ones I specifically were the older style 34w with a big "Econ-O-Watt" in the etch .. In general I don't like energy saver lamps, but those also happen to be my favorite type of 34w )
I don't believe F32T8's or electronic ballasts and such existed back then.
A year or so after I graduated, the school had a fairly large addition built on, and the original part was totally gutted & remodeled (so I'm sure all the original lighting was probably trashed at that time - I have no idea since I've never seen it). Then around 6-7 years later they had to do some significant remodeling & repairs to what was still fairly new.